\begin{abstract}
    here is some leading text another
    piece of text to be wrapped % This
    % is a very very long trailing
    % comment that needs to be wrapped
    % by latexindent to make sure the
    % visual display is in a good shape.
    % Second comment: this is a very
    % very long trailing comment that
    % needs to be wrapped by latexindent
    % to make sure the visual display is
    % in a good shape.
\end{abstract}
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